I sold cars for almost a decade and was pretty good at it averaging 30 cars a month. That means every year I helped people sign for $16 million of products. In the end I probably sold 3000 cars for over $100 million.
(Note, I stayed in it way too long. I think most of these benefits would come from 2 years)
I made close to 50,000 phone calls, leaving probably 20,000 voicemails. I closed atleast 1000 deals purely on the phone.
I've heard excuses, stalls, lies, promises and objections over 10,000 times.
I've seen thousands of married couples discuss if they should go ahead with spending $30-100k. I've seen how they interact while waiting. (Nothing pains me more than couples, or moreso one party, playing games on their phones ignoring each other).
While there is a lot more to modern tech sales than just closing incoming leads, I think car sales is an accelerator course for interacting with, reading, and closing people.