help with drag racing game

[ZW3039]

ok im making a drag racing game for my final project and i cant seem to figure out how to make the world stop after the first car gets to the finish line also i want as it stops to show the race times but that is also somthing i am having trouble figuring out. if some one knows how to help me or can do it for me wright back i need help my other problem is im trying to make my red light go off if i go before the green lite to end game and that is not working eather. i tired to just cancle the the let arrow keys move convertable corvett until the light turns green but im am having no luck please help me

there is no need to post it twice, look at your other post