Tesla's Supercharger network has quickly become the world's most extensive pieces of EV charging infrastructure and continues to improve with more locations and faster-charging technology. But with Volkswagen planning its own onslaught of electric vehicles, the German automaker will be investing huge sums into a charging network of its own.

Volkswagen Group of American has even set up a subsidiary called Electrify America, which was created with the sole purpose of bringing more awareness to EVs. Electrify America promotes all EVs (not just ones built by VW) and has recently announced an expansion of its charging network in the United States.

Electrify America has partnered with Walmart to install more than 120 ultra-fast electric vehicle chargers as part of the company's $2 billion investment to build fast chargers across America. The partnership with Walmart will make the retailer one of the largest charging station hosts in the country and emphasizes the company's commitment to sustainability. The expansion calls for the installation of 150 kilowatt (kW) and 350kW DC fast chargers, which allow charging speeds fast enough to add up to 20 miles of range per minute.

The first 120 stations are already operational and open to the public in 34 states across the US. Most of the stores chosen to receive the chargers are located off of major highways, making them an ideal stopping location for travelers. Electrify America says it plans to install even more chargers at Walmart locations in metro areas.

A significant number of charging stations are currently concentrated on the east and west coast and throughout major cities, but Electrify America wants to provide more stations to rural communities and middle America. Some of the latest Walmart locations have been strategically placed to help travel from Houston to Chicago, San Antonio to St Louis, and Washington DC to Savannah.

"This milestone marks an important moment in the expansion of our charging station network," said Brendan Jones, chief operating officer at Electrify America. "We look forward to continuing our work with Walmart to make electric vehicle charging faster and more convenient for consumers across the country, and in turn, encourage more adoption of zero-emission vehicles."