KEY POINTS
  • U.S. auto sales have slowed since hitting a record last year.
  • Morgan Stanley's Adam Jonas expects a large drop in used-car prices, due partly to advances in technology.
  • Consumers heavily dependent on trade-ins will find it harder to buy a new car, the analyst said.

In the automobile market, it's not just the subprime loans but falling used-car values that have one widely followed analyst worried.

"A stretched auto consumer, falling used prices, and technological obsolescence of current cars are ingredients for an unprecedented buyer's strike," Morgan Stanley Equity Analyst Adam Jonas said in a note Thursday.