If your only gripe about the lotus elise is your seating position, you aren't alone. There are some pretty simple (cheap) aftermarket solutions available that put you lower in the car.
Here's one: http://www.sector111.com/products/interior/seats/downlow_seat_rails.cfm
I'm sure it doesn't make getting in the car any easier than it already is, but, then again, you have a 7, so you're probably used to human origami.