You can cycle through the cameras by hitting the Insert, Home, PgUp, Delete, End and PgDn keys.
I think the tipping can really be put to bed. In real life they work hard to AVOID the high kerbs, that's what you should be doing. When they don't, they always end up on two wheels, even at slow speed. There's some examples of how the kerbs lift at slow speed even in this video:
http://www.youtube.com/watch?v=U54U2D-XJi8 And note that when they turn for the left hander, it forces the right side wheels down again. If they hit the kerb on the left hander, they will run wide.