Robert Loehr’s dealership is hanging in just fine, much like Fiat Chrysler Automobiles NV’s sales did last quarter. But just as investors doubt the U.S. car market can sustain near-record results for much longer, the Georgia retailer is apprehensive about a key issue: sticker shock. “Prices are crazy on cars nowadays -- all of them,” said Loehr, who sells Jeeps, Rams and other Fiat Chrysler models from a showroom northwest of Atlanta and has been in the business for 35 years. “They’re crazy to me, and I do it every single day, all day long.” New Jeep Gladiators -- the...