For all those who are complaining about having to design your own car... is it even a mandatory part of the ride? Why can't you just think of the design-your-own-car room as just another part of the queue? I mean the whole designing process takes up what, no more than 5 minutes of your time while you're waiting to ride? Seems kind of silly that people think this part ruins the entire ride when it's not even PART of the ride, it's just part of the queue. People think it would become tedious after the first 2 or 3 times... but then, couldn't you say the same thing about the pre-show of any other attraction at WDW? ToT, RnRC, Dinosaur... they all have the same pre-show every time yet everyone still enjoys those attractions.
I don't see what the big deal is... if you don't like designing your own car, then don't do it and just wait patiently like you would in any other line on any other attraction.
I for one love the look of the new TT, love the futuristic look and definitely think it fits in better with the Future World theme than the original attraction did (although I loved that too)