So we can look towards and achieve the 80% good solution instead of the 70%? Progress? If we're giving out subsidies for cars can we encourage lighter weight EV

So we can look towards and achieve the 80% good solution instead of the 70%? Progress? If we're giving out subsidies for cars can we encourage lighter weight EV's? A Tesla Model X is 50% more weight than a Bolt EV, with similar range.