Woah, I didn't expect such feedback for this game idea.
I get that for some reason, the creator of the game went for a British theme, and made the vehicles double decker buses. I guess if you're a kid, you'd bump around your toy cars regardless of what they are. So I guess with that line of thinking, why not double decker buses.
There's nothing wrong with the two prize format of Bump, and I liked that on either end was one bus with the same price, so one aspect is you're deciding if the prize on the left or the prize on the right is say, $1000 for example. I just toyed with the idea of making it a car game and keeping the bump aspect.
Gridlock is NOTHING like Bump... there's no bumping of any cars. I think they were trying to create a game that had some mechanical aspect like Cliff Hangers and Hurdles. What I don't like is that, for me, there's not much exciting about seeing mechanical cars slowly merge to form the price of the car.
I suppose I didn't think about my game being basically another version of Double Prices. Okay, it is, and TPIR already has a few variations on that theme.
Based on the first playing of Bump, I don't think they necessarily thought of the more visually exciting notion of watching the models gyrate as they bump the cars. The first "Bump" was really more of a "Push", without any hip movement at all+. That part of the gameplay came later, maybe as early as the second time. Bob even outright suggested that the bumping should look more exciting... it was probably his idea, but I am sure the staff also thought something more needed to be done for the game.