Some people really need to have a reality check. Like seriously, Scawen is not only a developer, he is also a father and has a wife. He is allowed time to himself and his family? Just because he said it would be released hopefully within two weeks, we cant blame him if he wants to take a day or two off to spend in the sun or something... Most of us here would if we could.
So just give him a break and calm down, its a game at the end of the day.
No, collisions between moving objects (including cars) are not affected.
There are three collision / contact changes :
1) Collisions with movable objects - they now have the same hardness as segments (track / walls / etc). Fixes the red barrier bug.
2) Objects (like autocross objects) have the friction of "concrete" when touching a tyre - was previously "ice". Helps on Ramp1 and Ramp2.
3) Accurate segment collisions - mainly affecting the contact detection at the *end* of segments and this fixes the pit garage exit bug.
Those speed bumps are now hard if you hit them with the car body so I don't think you will do that in a race. However, there is probably still luck involved, as they are thin you will probably still "miss" them sometimes, if they happen to be in a position between physics updates.