I think you would find that all of our cars will cruise easily at 80 with barely a touch of the pedal. In fact I think you would find that cruising at 80 in any modern car is very easy with barely a push on the pedal.
As for a push in the back...you should try a big diesel...feel that torque. And I can get over 50 mpg (imperial, not the small US version).
Yes I know diesels have more torque! Plus in the future whenever I become a successful person and have a nice job, I would rather get a 2006-2007 E550 or E55 for $15-16K instead of buying a new honda accord or something for $20k plus! That is a really smart thing to do, one can buy a 2006-2007 benz for the same price of a new corolla lol