While recently driving my 2007 LS460 (25K miles, with valve recall done) at around 40 mph I floored it to pass and the engine revved like it was in neutral for 3 or 4 seconds (seemed like forever) before the transmission engaged and downshifted, then caught up with the engine rpms, and finally started to accelerate. No other car I've ever driven has taken so long to downshift and accelerate, and I was worried that I might not be able to pass in time. This was unexpected and is a safety hazard.