Hmm. Safety difference between cars have more to do with design than minor differences in size. Unless you buy a really big, heavy vehicle, and one from the last few years, any safety advantage will be very modest. Modern cars are far better in side impacts than even larger older cars. In a higher speed accident I’d rather be in something bigger, but a slow moving postal carrier is more likely to be hit in the back or side. The biggest difference is going to be in your expenses. Anyone driving a bunch of miles of stop and start driving will spend plenty on gas. The Prius is not only super efficient, it is also extremely reliable. The cost per mile for driving one are among the lowest by any measure
The cab companies here were required to start using hybrids some years ago. At first they griped, but reportedly they very quickly found they were saving a lot of money, especially on brakes and transmissions. Toyota talks about the Prius having a CVT, and the effect is much like one, but what it has is a very straightforward set of planetary gearsets without much to wear out The regenerative braking means the conventional brakes don’t have much to do.