I've ran CB for years in trucks. Mainly for traffic, to pass the time and start Sh*t... no one really talk on the roads anymore for a variety of reasons....
Would be nice if the simplex VHF/UHF calling freqs were used more on the roads but in my experience, they are NOT used. On a recent trip from northern NV to IA and MI, then return the southern route to AZ and then back to northern NV, I had zero QSOs via the VHF/UHF simple calling freqs. And I've never heard of any simplex freqs dedicated to over-the-road use (kinda like how CBs were used).