Now I haven't tried to see how far forward our HCHII will roll while in reverse, but it certainly will. We have a steep (uphill) driveway. If I put our 06 Hybrid in reverse to back up the hill without pressure on the gas pedal, the rascal will roll forward. This is the only automatic transmission I've ever had, some I'm used to a car that will roll while in gear, but this surprised me. Should it do this and if so, why?