This car is in a class by itself. There is nothing even close to it. I tried the Prius and it struggles to get up to speed with the rest of the pack and its too noisy. The HS250h is quiet, smart, and has all the bells and whistles (and then some) that my GS 300 had. Lexus really thought about what could make this a great car, and they succeeded. For example the NAV screen can tilt in 3 different angles to allow one to read it in the event of glare, so you no longer need to remove your sunglasses to read it. The bluetooth technology is amazing. Talking hands free is like being there in person. The Park button is really cool and different. Overall, this is a great car and the styling is great!
Nav screen, park button, the front camera,
too new to make any suggestions at this time, and truthfully I can't think any improvements that haven't already been made.