All modern cars are designed to only be serviced on a 2 post lift, so for the man in the street they are a nightmare.
I do remember though spending four and a half hours changing a heater hose on a Scimitar GT V6. Remove o/s/f wheel, hold torch in teeth(no headtorches in those days) poke 1 hand and screwdriver through slot in wheelarch, kindly provided by Reliant,to undo one end. Lie horizontal on aircleaner again with torch in teeth and reach forward under scuttle to undo other end of hose. Try and extricate oneself prior to repeat the exercise to fit new hose. I had the aircleaner bolt head marks in my chest for days afterwards. My previous car was a GT6 that one could repair most things on by sitting on a front wheel, and indeed could do an oil change on the diff, gearbox(once an access hole had been drilled through the cardboard gearbox tunnel and a Morris Minor brake master cylinder grommet fitted) or engine without even jacking the car up.Did spend a lot of time balancing the triple Webers on mine-(not standard, but then neither was the tuned TR6 engine)but sitting in comfort on the front tyre.