I've had a cyclist follow me home for a mile or so to moan at me for driving a 911, which "makes to much noise". I literally laughed at him. He didn't like that. I didn't care. He said I should drive something which uses less petrol, I said I work from home, I use hardly any petrol, but thanks for his concern.
Anyone who acts enraged or annoyed is in reality annoyed that they can't afford one, like the white van driver shouting at the other day because I had overtaken him. On a dual carriage way. Doing 75 tops, he was doing 60. It's basically that they can't afford it and deep down they know they've failed at life and have a huge chip on their shoulder. I ignore them, who cares what they think, they aren't my family or friends...... Possibly the best one was a tesco van driver, blocking the road while delivering, when there was a large space 30 yards in front of him, told me to get a life when I asked if he could move, the swore at me, saying he was allowed to block the road, I asked if that was a good idea, when he could of parked 30 yards further on, thats when he swore. What he didn't see was me take his picture and report him to my local tesco store, which I use all the time. Tesco wasn't impressed with him.......
Just ignore them, but OP, I would of made it all very formal, obviously old lady thatcher had it in for you. Don't worry about it, people will whinge, but don't get a dull car as a result....