I think the 'floor' Pete mentioned was the asphalt, as yousay, but it's where the ramp meets the level part. One ENDS, and the other BEGINS. Not a lot of subtlty there. Can you make it from a spline instead? So it has a curve to it from ramp to level. Actually.... I've never seen one perfectly level or ramped either! A little variety in the modeling might help. A couple of pot-holes maybe. I love the bricks! I'm going to have to squirel that idea away for a rainy day when I need a cool texture! The Blocks on the other wall though... too regular. Not enough grunge there. Maybe some with chips, especially around the corners where those 'burly' guys don't care if/WHEN they hit going around the corners. Good work! Keep going!