IMO, after seeing bmw's 30 years of research into the hydrogen combustion engine, and their 300km/h hydrogen combustion powered race car, there will always be a market for combustion engines, rev-heads like myself love aesthetics of combustion engines.
While hydrogen has a much lower energy content, you won't get as much mileage out of the same volume of it as you would petrolium, however I believe the impact won't be that significant as hydrogen combustion can be run at a much leaner ratio during cruise, so you'll save fuel there.
Also if it's just a sports-car thing to have a combustion engine, the car is going to have two seats, be lower, smaller, sleeker, and so should be pretty good on fuel, relatively speaking.
I for one do not want to lose the combustion engine, but I would also love an electric sports car.
Another side note to electric cars, imagine being at a red light at an intersection, no engine noise, just the cars going past, which will be much quieter than current, plus you mostly hear the cars around you - meaning that sitting at the lights you'll be able to have a normal conversation with someone else in another car, without raising your voice. IMO this will invite more socialising, and a better / friendlier road environment.