<prompt> Human: currently a chemical engineering senior.My original plan is to buy a 4k-10k used car when i get a job after graduation. in class today, in chemical engineering economics course, my professor said, while talking about interest payments and such, chemical engineers avg salary after graduation is around 70k, with that kind of money, many of you can buy a new car thats 30k-40kSo i mean would this be smart? i know he only said this to show us an example problem in real life, but im just wondering.also, the example problem was that if you buy a new car now 2015 with a set interest, say 300 month, that 300 in 2015 is more thatn in say 2016, due to inflation and all that. of course this example is better seen with something more long term such as a house with a 15-30 year payment plan  <response>: theres a reason hes not an economics professor 