The first-generation Bugatti Mistral is a Targa hypercar for open-air driving. You get a removable roof and a hoop behind the seats, so it feels like a roadster top-off and more composed when you put the panel back.
Powertrain choices around the Bugatti Mistral engine stay in hypercar territory. In the 8.0 i W16 DSG Targa example, a gasoline W16 works with a robotic dual-clutch transmission and all-wheel drive, so you get brutal thrust with more everyday traction than a rear-drive roadster.