Elon Musk's company Tesla has revealed its eagerly anticipated heavy goods vehicle and an unexpected sports car, both of which run on electric power.
Both the Tesla Semi and Tesla Roadster were unveiled by billionaire entrepreneur Musk during an event in California last night, 16 November 2017.
The Semi is the company's first electric truck, which it claims can travel up to 500 miles on a single charge. The truck uses regenerative braking to recover 98 per cent of the vehicle's kinetic energy as chemical energy stored in its battery.

Designed for optimum aerodynamics and comfort, the curvaceous cab has enough space for the driver to stand, and a centred steering wheel for better visibility.
"The Tesla Semi will deliver a far better experience for truck drivers, while increasing safety and significantly reducing the cost of cargo transport," said a statement from Tesla. The company released a series of statistics comparing the Semi to current diesel lorries. Among them, Tesla claims its truck is better at climbing hills ? able to retain speeds of 65 miles per hour on a five per cent gradient, while diesel versions can only reach 45 miles per hour.

Fewer moving parts in the Semi ? which has no engine, transmission or exhaust system ? indicates that it should require less maintenance.
Safety features include an impact-resistant windshield, sensors that detect instability and react with twisting forces (torque) on each wheel to prevent jackknifing while braking. Cam...