Heavy revving when cold reminds me of my late Grandmother, who only passed her test on the fifth attempt because she was stuck for an hour in a traffic jam after turning out of the testing centre. Apparently even though she had driven nowhere and not been assessed on anything, they had to pass her as technically she had completed the allotted time without making any faults.
She had a nasty habit of starting her car from cold then revving its guts out whilst trying to get it off the drive. She went through many clutches, and never mastered fifth gear, motorway driving or indeed using full lock on the steering. Her last car, a G reg Fiesta outlived her, and made it to 120,000 miles under the driving of my sister who inherited it before it was written off in London by a red light jumper.