So per your advice, DH and I went to Kroger and I rode the Hoveround. It was interesting. I now know a little about how disabled people must feel. Most people tried desperately to avoid eye contact. Two people actually had the balls to ask me what was wrong with me. One was the cashier.
Mine didn't have a horn:( But I did enjoy abusing the backup beeper. My incisions aren't healed yet, so at least I got to go.
So there I am, with my list in hand and my coupon binder in the basket.