Impact 1 - As consumers absorb the cost increase of new cars that will push the price of used cars up significantly because science.

Impact 2 - As consumer purchasing habits react to the sudden price increase with initial reaction of holding on to cars longer, used car inventory will dip and also Impact market prices of new cars which will then feed back into the loop and raise used car prices.

Impact 3 - Car parts pricing increase will increase cost of all cars sold (see Impact 1 and 2) 

Impact 4 - Used car ownership becomes a more expensive proposition, leading to consideration of new car purchases by way of financing (because finance bros gotta get a piece of this pie) resulting in a revisit of impact 1 and Impact 2 with side shake of investment bros making a killing in automotive loan business shenanigans 

Impact 5 - Property crime extravaganza. You thought the whole cat converter theft was adorable? Just wait when parts in general are now higher value. 

Impact 6 - Insurance cost have joined the chat 

I could go on but since I didn't watch the video and have not read comments I feel bad