I shoot a lot of auto racing and normally use DSLRs. I recently bought a PL 45-200 to see if the format would be okay for racing. I like the weight of the m4/3 equipment but wasn't sure if it would be fast enough for the action. I had a chance to shoot a little today at Sonoma Raceway. It was practice day for the Go Pro Grand Prix of Sonoma and the Pirelli World Challlenge. Aside from the lack of a real through-the-lens viewfinder, it wasn't too bad. It was a little slow, although I was using an older G3 body. It was a little tough following the action. However, I was able to shoot one or two frames at a time and it seemed to work pretty well. Here are a few from today's take. I'll give the equipment more work and maybe I'll upgrade to a newer body. All in all, I'm pretty happy with the results. Any suggestions?