Car companies have long been on a cycle for their vehicles. It varies but generally we could say every seven years they're going to do a major redesign of a car. So I think it's safe to say the Model Y and Model 3 won't be sold in seven years. The question is, in seven years, will they have a different model, loosely based on the current Model Y and Model 3, that carry those same names? Your guess is as good as mine. Maybe Tesla goes bankrupt and the cars aren't for sale. Maybe Tesla continues and the names exist.