Two cars, no kids, and now, one two-seater is awesome!
As for those taller people with tiny backseats, you gotta show your friends who's boss in your car. When the seat in my Accord 6spd is adjusted for me, there's about 1-3/4" knee clearance between the back of the driver seat and the front edge of the back seat. I have driven it with four people in the car and no one behind my driver seat: me, passenger in the front seat, one in the backseat behind the passenger seat, and one in the trunk. No one sits behind me in that car.