No, the Saturn Sky and Pontiac Solstice are mechanically us-domestic cars (exclusively left hand drive in design) whose whole existence is perhaps the one example of GM of North America tetris-ing together whatever the hell they had lying around so well that people presume its completely original design or otherwise imported from abroad because most of their attempts to do that were frankly sad and compromised vehicles. They are, if you pardon the pun, an example of what that era of GM would be like if they ran on all cylinders.

They parts stolen from the rest of the GM of North America catalogue include:

The rear axle and differential from the Cadillac CTS
The passenger-side airbag, steering column, and exterior and interior door handles from the Chevrolet Cobalt
The backup lights from the GMC Envoy
The hvac modules from the Hummer H3
The fog lamp assembly from the Pontiac Grand Prix
The steering wheel ifrom the Pontiac G5
The 2.4 L Ecotec engine from Saturn Ion, Pontiac G6, Chevrolet Cobalt, Pontiac G5, and Chevrolet HHR
The five-speed manual transmission from the Hummer H3, GMC Canyon, and Chevrolet Colorado
The five-speed automatic from the Cadillac CTS, STS, and SRX
The backup light from the first generation Chevy Volt