Karma's chief revenue officer, Jim Taylor, previously told Autocar that the Revero's delayed entry into Europe (including the UK) and Asia was always part of the business plan. Prices for the current model start at $130,000 (£98,124) in the US.
The current Revero uses solar panels located on its roof that can power the car's electrified powertrain. Solar panels have been seen on earlier development cars, so expect improvements to their efficiency with the 2019 model if they do continue into production.
"The energy collected from the solar panels is supplied directly to the car's high-voltage battery, which in turn powers the electric motors," Taylor explained when asked how they work on the current model. "Our solar panels are twice as powerful as the original [Fisker] ones."
While no charging time for the solar roof was revealed, Taylor suggested that strong Californian sunshine would enable owners to leave their car parked outside all day and return to it with noticeably more charge.
"We're still a long way off from being able to charge it up significantly in a few hours, but if you left your car parked in an airport car park for a couple of days, you'd see more energy," added Taylor.
The input of the sun's energy is displayed on the Revero's infotainment screen, so drivers can see when energy is being captured, even on the move.
The current Revero uses a 260bhp turbocharged 2.0-litre four-cylinder engine from General Motors and a twin electric motor set-up, with some parts supplied by BMW. It's claimed to be capable of running on battery power alone for up to 50 miles, but Karma has pushed for a better range in the updated model in order to satisfy even more stringent real-world tests.
As a range extender, the Revero straddles the line between electric cars such as the Tesla Model S and plug-in hybrids like the Porsche Panamera. It will also compete with the upcoming Polestar 1 hybrid coupé.
Karma Automotive has been built upon the remains of Fisker Automotive, which went under in 2013. With owner Wanxiang Group providing stronger financial backing, insiders are anticipating a more productive future for the American brand.
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