the ultimate musclecar shoot out... Hotwheels against Johnny Lightning against Racing Champions not sure if anyones seen this before or if a board member did this but it appears someone has way too much time on their hands....check it out http://www.breithaupts.com/totc424.htm
Nice comparison. I think HW nailed the shape best. Doug runs the "Tales of Toy Cars" website. Lotsa neat articles there for the small scale hobiest.
