Except jumping across gaps was the whole of the vehicle.
And you guys are right: Motorcycles built into tanks and sonar vision are stupid, too. But the flying Tumbler is even worse. Just because some bullshit existed in Batman 1 and 2 doesn't excuse Batman 3 from all criticism.
In the end you can't explain it all away. How come none of the detectives or policemen figure out its Bruce? How come no one can put 2 and 2 together? Its a comic book movie about a man in a bat costume. Yes its grounded in reality but not all of it is obviously realistic.
How come the US gov't doesn't set up a task force to catch him or investigate him?
And of the top of my head I can think of one possibility
movie takes place 8 years after TDK. TDK took place months after BB. The only think Wayne Enterprises engineer's would have noticed would be the tumbler, which was also shelved years ago. So in 8 years all they could have connected the dots to would be the tumbler.
I think a lot of people are going to go out of their way to make sure the movie falls victim to the third movie curse. The levels of nitpicking has risen.