“The car designer here assumes a reactor that uses 8 grams of fuel, far smaller than a sub reactor.”
The ‘designer’ knows nothing about nuclear physics. Apparently you don’t either and are willing to believe info from companies soliciting funds on the internet. Please request your spouse to safeguard your funds.
Then explain to me why a LFTR will not work with 8 grams of Thorium to power it. Educate me.