The frequencies displayed are UHF, in the European PMR446 band, which is nearly identical to American FRS but not close enough to use the same radios. Call that a minor miss on the author's part, change those 446's to 462's and label it FRS, it'd be good.
Exact numbers notwithstanding, it's UHF so the wavelength (roughly 70cm) is small enough to penetrate the window-sized openings in the car's metal shell, unlike the larger wavelengths of CB (27MHz, 11 meter wavelength) which require an external antenna.
I've used both FRS and amateur 70cm (440MHz) on roadtrips, and it's much more convenient than CB owing to precisely that -- simple whip antennas on handheld radios, no magnet-mount mess with a coax cable pinched in a door seal somewhere.
The audio is also somewhat unrealistic in that if multiple users are pressing push-to-talk simultaneously, their voices mix together. Realistically only the strongest one would get through, owing to the "FM capture effect", and the others you'd never know were there until they keyed up at a non-conflicting moment.
Exact numbers notwithstanding, it's UHF so the wavelength (roughly 70cm) is small enough to penetrate the window-sized openings in the car's metal shell, unlike the larger wavelengths of CB (27MHz, 11 meter wavelength) which require an external antenna.
I've used both FRS and amateur 70cm (440MHz) on roadtrips, and it's much more convenient than CB owing to precisely that -- simple whip antennas on handheld radios, no magnet-mount mess with a coax cable pinched in a door seal somewhere.
The audio is also somewhat unrealistic in that if multiple users are pressing push-to-talk simultaneously, their voices mix together. Realistically only the strongest one would get through, owing to the "FM capture effect", and the others you'd never know were there until they keyed up at a non-conflicting moment.