The company’s American portfolio doesn’t include a single plug-in hybrid. That will change with the low-volume RS5 and Nuvolari, but more models are also on the way. Audi’s home lineup in Germany includes over 10 plug-in hybrids, and none of them are currently available in the United States. The Nuvolari will be one of the first Audi plug-in hybrids to reach U.S. shores. One expert, however, believes that Audi could make use of both full hybrid and plug-in hybrids, and it all depends on the cars’ underlying architectures.