Started with Farmer in the Sky as a preteen. Love the classics, Heinlein, Clarke, Asimov. Recently retired, I will pursue scifi again vigorously. Dying to know who wrote a book, author called a new Heinlein, about young teens who are supersmart and survive a global virus, killing all who are not supersmart. The boy is a classical pianist and nurses the girl through a coma. Then they set off on a car built to go on rails, wind up with other survivors and beat the invaders (unless I am mixing two books). I have wondered about this for 10-20 years. HELP!
bill
bill