Cars and wheels look great. If your going for looks, you got the wheel thing down. But if your looking for pure speed, your going to find that a full wheel (wheel without cut outs) will run faster than your current versions due to the air flow. I know it seems nuts but when you get those little wheels running down a track, the full wheel cuts through the air and the cut out wheels act like a fan and you have air going all sorts of directions and slows your car down. I did a lot of testing a few years ago with the Derby Worx RS-X wheel (RS wheel with about 100 holes in it
/images/boards/smilies/wink.gif and even though it was lighter than the RS full wheel, the RS beat it in ever sort of test i did. I too have laser cut some designs in wheels but still know they will not out perform the solid wheels out there today. Again, this is just my opinion and i look forward to seeing anything you send. You look as though you are a veteran at building.
Ian