Last week, Tesla founder Elon Musk wrote his 35.8 million followers that he was signing off Twitter for a while, posting again only after more than 24 hours had passed.

It appears that he may have used that time to visit England, where Tesla could be planning on opening a battery factory near Bristol, a site that Musk reportedly examined while he was there, as per The Times.

More specifically, this was the site of a former munitions plant in Bridgewater, southwest of Bristol, which is now being redeveloped as an energy-related business park.

The U.S. EV-maker is also planning on building a car factory in Germany, initially for Model 3 production – work there is scheduled to commence in 2021. Musk had previously stated that Britain was in the running for a plant location, before he went with Germany.

His main concern was the UK’s future trading relationship with Europe. The UK quit the European Union on January 31st and is currently negotiating a new deal with the bloc.

Meanwhile, the car industry in southwest England hasn’t been doing so well, especially since Honda announced the shut down of its Swindon plant next year, as well as Dyson’s decision not to build its first ever electric vehicle at the former Hullavington airfield in Chippenham.

Also, some Twitter users speculated that Musk’s visit to Bridgewater could just as well be associated with Tesla’s move into energy storage, reports Autonews Europe. Tesla already confirmed the launch of its Autobidder automated energy trading platform in the UK.