The first time I tried to honk my car horn while driving using hand controls, I almost caused an accident by having to take my right hand off the wheel while braking with my left. I bought a pushbutton switch at AutoZone and went to my always reliable mechanic and had him install it on my hand control so I can press it with my thumb.

It took him about 30min to install and was well worth the cost. I tell people it's for the passenger ejection seat.

/now I can brake and honk with my left, steer with my barely functional knees, and flip people off with my right. Typical day here in Albuquerque!