I believe as the bill is written thus far, the $80k limit applies to MSRP, which wouldn't include sales tax. That would put the tri-motor in range of the credit, depending on what options you might add on. Obviously we'd have to see what actually ends up getting passed into law, though.
The Senate bill as written says "First, it would place a limit on the
total price of the cars eligible to $80,000."
Don't forget the $1200 Destination and Doc Fee which are not part of the MSRP, however they are part of the total price of the car.
A trailer hitch is also $1000.
Example for Tri-motor, Destination and FSD
$69900 (no options) + $1200 (destination and docs) + $10,000 (FSD) = $81,100
Example for Tri-motor, Destination and Tax (Hopefully TAX WON'T be included in the total sales amount.)
$69900 + $1200 (destination and docs) + $4266 Tax + $75,366 (well under the $80k limit)
Like you said, it may be a moot issue for now. "With Republican EV support in short supply, the chances of the legislation passing in the Senate are scarce with the filibuster in place. While Senate leadership could use a parliamentary tool known as budget reconciliation to pass the legislation, there is only a finite number of times a bill can be passed this way. The administration may push the Senate to use the budget reconciliation process, which only requires a simple majority on a
bigger piece of legislation like the American Jobs Plan.
It's a wait-and-see. Lost of factors to consider.
The bill might not pass.
The ceiling price might be adjusted downward (definitely not upward) in negotiations.
The increase in the price of steel may cause Tesla to raise the prices (not likely, but could happen).
Best to be safe and add FSD after if it knocks your socks off. (Of course, it would have to be with separate financing.)