Your 2007 Prius will give you many more years of great gas mileage and service! If you have plenty of money to waste and throw away on a 2013 'GOFORIT' THINK before you make a mistake that you'll regret later!!!
The deal for PiP (with all the incentives) was so hard to ignore, I upgraded from 2006 Prius with 164k miles. My new commute is also ideal for PiP with plenty of short trips.
I find myself with the same question. Do I trade in now or later? My car has depreciated to such a level that it is effecting the dealers usual profit margin which is usually applied to trade in deals. If I trade my car in later, the dealer will make less money but will be very keen on striking a deal to sell a new car never the less. I have decided to hang onto my car for another 35,000 miles and wait for technology to march on to such an extent that a new car will make more sense.
glad your car is in better shape than mine was... needed to trade it in ...and glad i did. thanks for writing.