After driving hundreds of cars to evaluate automotive technology, we've settled on our top 5 car technologies. Amongst the many, many features different automakers are making available, these are the ones we've found the most essential for everyday use. Some of these technologies can be found on most new cars today, while others are rarer, only offered by a few automakers. Some of these technologies will keep you and others safer, some will save you money, and some will just keep you happy.