...Oh, and how was the original Time is Money / It's Time to Stop worse than the current iteration? I honestly can't imagine that being possible.
Even though I personally like the newer version more, I did like the original UNTIL they changed the rules and made the name completely pointless.
I think that Penny Ante would be the one game I would have brought back, on the condition the original set is used/remade. It would be perfect time wise, and it's a good test of pricing knowledge. Mystery Price would be another good choice to me, with a few gameplay changes (make the prize package similar to Safe Crackers with the smaller prize being the mystery prize, go from 4 small prizes to 3).
On a bit of a tangent, I think that Gold Rush from the TPIR/LMAD mashup week would be a great quick car game. IMO, if they just had reveals for where the digits went as they were picked, it would already be better than Gridlock.