Since you're asking a math question the answer is "yes of course." However having owned an Elise and driven a Tesla Roadster I will confirm that strapping the e

Since you're asking a math question the answer is "yes of course." However having owned an Elise and driven a Tesla Roadster I will confirm that strapping the equivalent in weight of an entire F1 car in batteries to the bottom of one removes aerodynamic handling from the bigger equation at play. They're fun as hell and also uncomfortable as fuck. 400 miles is more of an endurance test for the driver than the power supply. (Also, loved every second inside both of them!)