When 3G cellular phone networks came out they allowed a data path for each phone of about 1.8Mbps, as a maximum. But by tweaking the 3G and 4G standards, and allocating more and more of the network capacity to data, before 5G was launched, the telecoms industry was happily talking about several 100 Mbps per phone, with almost no change to the underlying base station technology. The standards bodies simply allowed for a protocol called high speed packet access (HSPA) where it better accommodated internet packets in radio, and where people expected to have less conversations on phones. Expect the car battery market to go down the same route, with the key measurement here being watt hours per kilogram of…