The Batmobile has a few characteristics that remain more or less constant: It’s black with fins, and it looks extremely powerful (although it would make parking in Gotham a logistical nightmare). It’s also reasonably expendable: Bruce Wayne has changed his wheels more often than he’s changed his iconic suit.
According to Autoblog, “[D]id you know Bruce Wayne’s secret identity spent some time behind the wheel of a gussied up Ford GT90 Concept? Neither did we. How about an Opel Speedster, Dodge Viper, several Chevrolet Corvettes, and a Mercedes-Benz CLK-GTR? Yep, we had not a clue.”