If it was because it was too expensive to build & sell in the USA how come they're building and selling one like it in China!
The Buick Velite 6 PHEV combines a 1.5-liter 72-kilowatt (97 hp; 98 PS) internal combustion engine with an 80-kilowatt (107 hp; 109 PS) electric motor, driven by an electronically controlled variable transmission (e-CVT). Together, they produce 135 kW (181 hp; 184 PS) and 380 Nâ‹…m (280 lbâ‹…ft) torque.[8] With a 9.5-kWh battery capacity, the PHEV has an electric-only range of 60 kilometres (37 mi) and total range of 780 kilometres (480 mi). The Velite 6 PHEV includes a "lock" mode which keeps the car on hybrid power for maximum range.
Roy 2011 Volt #1019
The Buick Velite 6 PHEV combines a 1.5-liter 72-kilowatt (97 hp; 98 PS) internal combustion engine with an 80-kilowatt (107 hp; 109 PS) electric motor, driven by an electronically controlled variable transmission (e-CVT). Together, they produce 135 kW (181 hp; 184 PS) and 380 Nâ‹…m (280 lbâ‹…ft) torque.[8] With a 9.5-kWh battery capacity, the PHEV has an electric-only range of 60 kilometres (37 mi) and total range of 780 kilometres (480 mi). The Velite 6 PHEV includes a "lock" mode which keeps the car on hybrid power for maximum range.
Roy 2011 Volt #1019