Back in the late 1970s in Chicago, Bell System built the first mobile phone system that could support hundreds of concurrent connections. That was a big deal compared to, for instance, New York where only a dozen or so people could use the cell network at a time. When this video was made in 1979, Bell had 1,300 customers using its mobile network, and, if you believe them, their calls were clear and the connections never, ever dropped. Maybe they don't make them like they used to.