Pros:

• The start-mechanism
• A kind of a seesaw after the start
• The bridge
• The big bend
• The ramp - the car jumps up to ten cm
• The apparatus at the end with the rising chequered flag

Cons:

• Lego should have added more tricky pieces or passages to the track - there only three of them - and more track pieces for the price of 50 € (at the time when I got it)

All in all a very cool set - I combined it with set 4586 and had a lot of fun with it!

this is a mega disappointment, it doesnt work properly. first off its not side by side racing, so the one that wins is the one you release first

pros
pieces
alternate tracks
looks cool
the alternate tracks are in the instruction booklets

cons
doesnt work well
takes to long to build

it usualy runs ou of "go juice" by the finish line, and somtimes it cant make it up the jump. realy the peices arnt that great. theres not many besides the tracks and what do you do with them. the good peices are the gate, ladder plants pipes and finish flags. i've seen it work once or twice and thats realy it

While I must admit that it looks cool, the actual performance of it is anything but. You can rarely get it to work, and 50 dollars for looks does not do it for me. If it worked better it would be an awesome set, but sadly it does not.