need help with racing game

I am new to construct and am trying to make a racing game.I want that when i press 'left' the car should jump to the left position.I dont want it to move normally.when i tried to send it to x=-4 it jumped to that axis of the room.How can i make it jump to x -4 from the current pos?

I think the usual method is to use a dummy sprite with multiple image points.

If you give the dummy the movement behavior, and have 2 different image points, you can have the car pick via variable which image point it should set position to.

I am sorry but i just joined Construct and dont understand all that

No time to explain now, but here's a cap to play with.

http://dl.dropbox.com/u/666516/laneimagpoint.cap

I'm not sure if you mean this but just take the old car.x and add +4 to it?

Like this: set car.x= car.x+4

If you don't get what I mean just tell and I post a cap

Would be uber simple and so on