hehe need for speed 5, porsche unleashed (the best racing game of all time and I've beat every game in the series with high scores starting with The Need For Speed in the nineties)......
Uhm actually..... running the "Time to kick ass and chew bubble gum, and I'm all out of gum" sample could come in handy for a duke3d track

Google up GL Duke, it's a modification of the duke nukem engine which puts it into TRUE 3d via opengl, you get true pespective and truly 3d models using what's called "voxels" aka 3d pixels.... it's pretty groovy for all you hardcore oldschool duke 3d veterans.