Challenge Communications began in Toronto in 1969 and by 1977 had taken most of the mobile phone market from Bell.
Still, not a lot of market penetration, as these phones cost almost as much as a new car.
Bell tried to stifle the company, but the CRTC ruled in favour of Challenge, which nevertheless went under because of its legal costs.
The company started over with a new name and, ironically, received a $75,000 order for 14 car phones for company executives from -- guess who? -- Bell
and then there was the Midland Telephone Style 23 Ch CB Radio Model 13-884