From the two introductory commercials, there are three clues that identify a 90-mile segment of the Dodge Journey (East) route, showing it traveling north (from Magic Forest), towards Ticonderoga, then either leaving New York and moving into Vermont, as well as moving west past Eagle Lake.
Update #1: Added unsolved clues, including possible final destination.
Update #2: New location added: PJ’s Barbecue, Saratoga Springs, NY
Update #3: Location identified, Eagle Lake, NY. Google map updated.
Update #4: Edited version of possible final destination with clearer view of background added.
Warning: I’m aware that a number of individuals are either flying or driving long distances to participate in the search. The final (possible) location may have been identified, originally posted and discussed on Dodge’s YouTube board. Assuming they have a contingency plan, they may very well change the final location or resort to, according to the contest rules, “administer(ing) a skill-based tie-breaker.”
General search comments —
- For each of the last two Dodge Journey searches, the final destination was a National Park: Eldorado National Forest (West) and Black Kettle Grasslands (Midwest). There do not appear to be any in New York and just one in Vermont (Green Mountain), but south. White Mountain, in New Hampshire is another possible destination (and only if they stick with this MO).
- The final location for each Dodge Journey is used in the introductory commercials: creek location (West); hot air balloon (Midwest); bike removed from rack (East)
- PJs Barbecue has not appeared in the known commercials or videos and will most likely be a radius search clue, provided the day of the hunt.
- Eagle Lake may be a location for video footage alone, as it deviates from their apparent route, like the Midwest drive and intersection shot. Of course, crossing into Vermont by ferry, could be a bit of misdirection as well, like Emerald Bay in the West search.
- There are conflicting clues, unlike the last two searches. The journey traveling south across the Twin Bridges, east into Vermont and west by Eagle Lake.
- For the West search, with the two introductory commercials, the clue furthest west was Kyburz Garage & Mini-Mart, Kyburz, CA. With the launch of the 300-mile clue, Hwy 89 (quickly identifiable) and Emerald Bay were added, extending the route by about 15 miles. Not much was added with the 200-mile clue for the Midwest search. They did give you Sayre, OK (which adds about 10 miles) but Elk City, OK was actually closer. Bottom line: it is possible with what we know before the hunt actually begins, the route could be extended up 15 miles.
- You may not be just looking for a Dodge Journey at the final location. There could be a supporting cast: a trailer (probably to hide the Journey until show time), other cars and crew or it could be on private property. Here’s a shot on location from the Midwest search final destination (contributed by Jessi). See also this article from the West search about location.
Best of luck to all the “boots on the ground”!
1. Thaddeus Kosciusko Bridge or Twin Bridges, NY

In the video, the Dodge Journey is traveling south along Interstate 87.
Notes: I fully expected this clue belonged to the Dodge Journey (East) route and combed through far too many images of arched (suspension) bridges. The breakthrough occurred by searching for parallel arched bridges. Google street view to confirm:

2. P.J.’s Barbecue, Saratoga Springs, NY
Article: Portion of TV commercial filmed at PJ’s Bar-B-Q on Route 9

Notes: This was a great find by by Brad and will most certainly be used for one of the radius search clues, e.g. 100-miles. Expect to see a shot of this sign, location or reference to the food. This does not extend the route but may already provide a range limit.
3. Magic Forest, Lake George, NY

In the video, the Dodge Journey is traveling north along Highway 9 (Magic Forest is on the east side of the highway).
Notes: A search in google reveals the location of the Magic Forest (google image search: uncle sam statue) and google street view can be used to determine location relative to the highway.
4. Ferry crossing, leaving New York, entering Vermont

In the video, the Dodge Journey is entering Vermont, traveling north.
Notes: This took a bit of detective work. First, you can assume that the Dodge Journey was traveling north from New York, crossing into Vermont. You also find that water creates a natural border between the two states. After checking the obvious highway border crossings, including a bridges, I resorted to ferry crossings and bingo – Google street view verifies the location:

Here’s a great picture of the ferry crossing departure point into Vermont:

Notes: This was provided by Hadrian. Source: Wikipedia – State Route 74
5. Lake view drive, Eagle Lake, NY

The picture below, that made it’s way around earlier actually came from Panoramio. Using Google street view, there’s a Panoramio option in the south lake to view. It’s a definite match. It was mentioned this came from the Addison, VT or Panton, VT. That certainly is not the case.

Google street view to verify:

Notes: This location was properly identified by Kevin. The Dodge Journey is traveling west, the view is on the south side of 74.
Google Map of partial Dodge Journey (East) route, using introductory videos.
Final destination?
Like the sequence of the “family” exiting the Journey near the hot air balloon in the Midwest clues – this may very well be the final destination for the East search. Kayaks were a theme for the West search and the hot air balloon for the Midwest search. Bikes are on the rack as they cross the bridge in NY and pass by Magic Forest. There are a couple of inconsistencies however. The both the West and Midwest searches, the final location shot was tighter (reducing the chance of discovery by matching landmarks) and we see the travelers exiting the vehicle.

After the bike is removed, note the lake and mountains in the background.


Notes: Same shot with foreground images removed (courtesy of Cycling Zen).
Given that the Dodge Journey Search (West) started from a landmark city like San Francisco, Dodge Journey Search (East) will probably start from New York City, traveling north, toward the two known destinations (estimated route length: 225 miles). With the addition of the Twin Bridges location, this pretty well confirms NYC as the starting point, although Albany, NY, can not be ruled out.