Great game with easy learning curve
This is game is quite easy once you've mastered the vehicles characteristics and handling. It took me around 15-20 mins to complete the whole game. All you need is to gauge the momentum. However, sometimes the physics are a little off but that's ok.
Those who find this difficult I urge you not to give up. Some of the levels like level 8, 13 etc can be completed under 25 seconds. Trick is to look ahead before you leap. ;)