I purchased my Insight used last fall. Before this car I drove a Del Sol for many, many years. My main reason for purchasing the Insight was because of the access to the carpool lane which cuts 10-30 minutes off my comute each day. I recently looked at what I paid for gas for the last few thousand miles compared to the last few thousand miles on the Del Sol. There was not a huge savings. I think I actually paid a little more for the Insight gas because of higher gas prices. I did buy less gas, but not a mind blowing amount. I kept the Del Sol because if I ever change jobs I will probably go back to driving it because it is all paid for. So finacially I would stay with the Del Sol because it got decent milaege....That being said I LOVE THE INSIGHT I don't know if I could part with it!! Anyone want to buy my Del Sol??