I ran through the whole thing, it's a long comparison of 'what would you buy' given your preferences in car manufacturers, costs for chargers, etc. Not sure why you wouldn't do it, it's a survey, They got your info from when you bought your car, it's public info.
You don't need to give them your email if you don't want to get the reward. I can run my own email and filter things I don't want, and gmail does an excellent job of trashing things that are trash, automatically. By the way, this isn't one of those Marketing course things we get here all the time, it took weeks to create this survey. Looks like something for a car manufacture to decide what to sell.
One of the main options items is: would you purchase a car that has the option to use (? perhaps let you rent for free?) an ICE car for X weeks a year. Like that's the only option for some trips? They still don't get it....