It captured all the excitement of a three-hour plane ride without a beverage cart. Low stakes to be sure, but the low budget all around kills them. There are more cameras in the Cash Cab. If a better production company did this, they'd insist on knocking out a couple of rows of seats.
The games are dreadfully dull. One round was Winner Take All with half the sound effects. Another managed to be Card Sharks without the strategy. Granted, Cash Cab isn't mind-blowing game play, either, but it takes advantage of the situation. Game Plane doesn't.
It showed how good Mark Wahlberg is, though. He gets you through the half hour.