[Proud_USA_Republican]

Its the launch control for racing against ferraris and GTRs. Obviously these dumb liberals keeping putting it in this mode on the freeway and pull a Schmaucher hitting over 90mph.

Actually, B mode is engine braking; using the compression of the gas engine to slow the car down. You dump energy through the engine instead of the brakes. The intent is to slow the car on long descents. Its used because I've heard that when your braking down long hills in a hybrid design like this, prolonged periods of non "B" mode braking will cook the tiny undersized brakes on these cars.

[Inyo-Mono]

Actually, B mode is engine braking; using the compression of the gas engine to slow the car down. You dump energy through the engine instead of the brakes. The intent is to slow the car on long descents. Its used because I've heard that when your braking down long hills in a hybrid design like this, prolonged periods of non "B" mode braking will cook the tiny undersized brakes on these cars.

Same as putting my stick shift in a lower gear when going down a steep hill or downshifting to second just before I come to a stop.