Proterra, a company that produces heavy-duty electric vehicles, has announced it has set a world record for driving the longest distance ever travelled by an electric vehicle on a single charge. Its 40-foot Catalyst E2 max managed to travel 1772.2 km on a single charge at the Navistar Proving Grounds in New Carlisle, Indiana.

This isn’t the first time Proterra demonstrated the range and performance of its electric powertrain and battery systems. Last September, Proterra drove 970 km with 440 kWh of energy storage, and in 2015, Proterra drove 415 km with 257 kWh of energy storage on a single charge. The vehicle used in its latest attempt features a 660 kWh battery.

“For our heavy-duty electric bus to break the previous world record of 1,013.76 miles (about 1631.5 km) – which was set by a light-duty passenger EV 46 times lighter than the Catalyst E2 max — is a major feat,” said Matt Horton, chief commercial officer at Proterra.

The Catalyst bus is available in 35- and 40-foot lengths, each with three main electric configurations – FC, XR and E2 – with energy capacities ranging from 79-660 kWh. According to the company, their vehicles cost much less to maintain than conventional vehicles with internal combustion engines.