The Code contains specific rules on marketing communications for motoring. For example marketing communications for motor vehicles, fuel or accessories should avoid portraying or referring to practices that encourage or condone anti-social behaviour or unsafe or irresponsible driving
The rule that car marketers most frequently breach is 19.4, which states that, whilst marketing communications may give general information about a vehicle's performance such as acceleration and mid-range statistics, braking power, road holding and top speed, marketers must not make speed or acceleration claims the main message of their marketing communications
E.g this was infringing the rules. Incredibly tame compared to the 60s/70s advertising.
Apparently the blurred lights was found to imply the car speeding.
I wonder if that design did away with an internal engine cover in the bus compartment. If so then working on the drivetrain with it running could be quite awkward.