I recently watched the episode where the mythbusters used the design of a golf ball on a street car to see if it added fuel mileage and I wondered what about a race car traveling at much faster speeds. Could you see faster e/t's or lap times?

NASCAR has very strict rules. Although dimples may help they would never allow it.

Could be interesting to see if aerospace engineers are getting prepared to test dimpled aircraft now.

I don't think you'll see dimpled aircraft anytime soon. A big portion of an aircraft's drag is due to the lift the wing generates. Every dimple on the plane would increase the area and weight of the skin. Additionally, the added surface area would require more paint which would again add more weight. For every bit of added weight, you have to generate more lift and in doing so, you create more drag. Aircraft hulls are also pressurized, so you would probably need thicker skins to keep the pressure from popping the dimples back out. Again, adding more weight. Its all about the trade offs and for an aircraft, I think there will be very little benefit if there is any. The best results will probably be achieved on small unpressurized aircraft like a 4 seat Cessna.

I'd originally read through this post, and agreed with the logic, dimpling the surface of an aircraft would increase the amount of material needed cover the plane, therefore the weight, making the entire idea unfeasible.

However a couple of hours later its occured to me, that golfballs also are effected by weight. Heavier a ball is the less it would travel. Actually the larger an object is, the less surface area there is in comparison to the volume.

I'm guessing there's a reason but I dont think its weight, weight should be more critical to a smaller object like a golfball. Perhaps its to do with the nature of airflow over the object. A ball would be constantly rotating, rolling over and over during its flight, a plane of course doesn't.