Agree that there is no lifestyle change in driving a car with no guts.
What is needed is an adjustment to your expectations and this will follow through to your driving style. Overtaking and freeway merging needs anticipation and planning, especially where the car requires written notice to accelerate.
Many years ago I drove a Honda 360 (2 cyl air cooled with a 4 speed crash box) and the local buses could win a drag race on a good day with 1/4 mile times measured with an egg timer! It never stopped me driving it on the freeway because I planned the merge and wrung its neck to fit into a slot in the traffic.
Plan ahead, have a back-out plan and be conservative and you will not have a problem.
Simon