Never mind about the motor noise, the warning sound from the Titanic (or was it QE 2?) give me a much welcome surprise, and a full chortle
Make no mistake, Lee, you've done a wonderful job- as usual. It looks the part
completely.
If you can tone the motors down, fine- but whatever you do,
don't change the QE 2 hooter!!
I had an uncle who used to service ambulances, and cop cars, for the Strathclyde (Glasgow) authorities. He also had a passion for trains, and managed to fit a two-tone Intercity horn to his car

(quite illegal, of course)- but the sound could shatter local windows, and passerby spectacles

"Get your facts first, and then you can distort them as much as you please"- Mark Twain.