Nice... I can tell you made this with Game Maker 6. Nice software, but I don't know if that is the software to use to make that kind of software. I can't get it to do much of anything but paste pictures on the screen.
That's fine to make something like that if you are learning , but going that route won't get "seamless textures". Please try either something else or make it in something else.
Why not make something in DarkBASIC, hey. It might be smart since, belive it or not, you are on a DarkBASIC forum.
You could finish your car racing designer.(using DARKbasic's Bluegui or etc)
1% done... [href]www.x-streamsystems.tk[/href]... no wait, I don't have the rights to this domain anymore...
Now it's [href]xstreamsystems.freespaces.com[/href]