Car dies on the highway this morning! Rush-hour, but I was lucky to be in the rightmost lane already so I was able to pull safely in break-down lane which is normally allowed for travel but luckily not in that SMALL section only!

Tow to shop.

Shop guy says there is no resistance, you can crank engine by hand! Woa!
He is thinking rebuilt engine or junking the car! (Subaru, 127,000 mi.), as the investigative work would be prohibitive, and would require yet more money to get something working...
Wife says junk it.

Anybody here with a suggestion as what to do, or look at next, mechanically?