Here are two: https://pubmed.ncbi.nlm.nih.gov/15637215/ and https://www.nationalgeographic.co.uk/environment-and-conservation/2022/05/fruits-and-vegetables-are-less-nutritious-than-they-used-to-be. Or if you prefer a video, ahref=https://www.youtube.com/watch?v=Yl_K2Ata6XYrel=url2html-8122https://www.youtube.com/watch?... >

Your numbers are slightly off: Most car engines are only about 26% thermally efficient, not 30%, which means a tank to wheel efficiency of 24% (20-25% is the range typically used). The battery to wheel (apples to apples comparison to gas) is between 70%-75% according to Nissan and Telsa. So the vehicle comparison is a electric vehicle is 3x more efficient. From Well to Wheel for electric is about 33% and is 14% for gas, (https://matter2energy.wordpress.com/2013/02/22/wells-to-wheels-electric-car-efficiency/) This means electric is still twice as energy efficient as gas.

Again, individual circumstances will vary. I am about to graduate with a MS in computer science. I went in to my graduate degree straight out of college. I have not had to pay for any of my grad program because grants and scholarships covered it. There tends to be a lot of money for grad students. The two years earning is offset by assistantships ($13,200 a year in my case) and the initial starting offer ($45,000 for undergrad and $60,000-$70,000 in my case).