First: accidentally, although of course correcting words in a quote apparently no longer needs to be indicated.
Secondly: this implies that they had left the engine running! Unless of course they shifted it into neutral, as @jlw 's summary would indicate which would make more sense.
In any case, they were apparently so engaged in the front seat, so they were going to end up mostly unsatisfied anyway. Does a Range Rover not have enough backseat / cargo area to get more comfortable?
