When Lars Magnus Ericsson installed a telephone in his car, he proved you could communicate from the road. But while the first mobile phone was indeed mobile, it was anything but simple to use.
Ericsson drove around Sweden and, when it was time to place a call, he would pull off to the side of the road next to telephone poles. Then his wife, Hilda, would take out two long sticks and hook them over a pair of telephone wires. Ericsson would then crank a handle on the phone to get a signal from the operator.
Pretty slick for 1910..