Since automobile accidents can cause problems, don't put yourself in a situation where an accident is more likely to happen. Drive carefully, and obey the speed limits, even if the locals don't, and you should have no problems driving in Mexico. Most of the main highways are 4 lane freeways now, although many of them are toll highways. The automotive mechanics in Mexico are legendary for their ability to repair any vehicle, at reasonable prices. In the larger cities, you can attend events such as the opera, symphony, bull fights, horse racing, dog racing, professional sports, etc.
Smaller centers have folk festivals, stage plays, fiestas, flea markets, street musicians, etc.
The coastal areas offer marvelous fishing, diving, snorkeling, and beach activities. The highlands offer hiking and the exploring of ancient ruins and colonial buildings. Litter can be a problem in some areas of Mexico. Even if there was a will to clean it up, tax dollars are probably not available for it. Shopping is varied and generally inexpensive.