That's pretty cool. Investing into a nice hot dog cart and being that committed to selling them. Seems like a fun day of working.
You have to put in some hard work just to make a decent profit. Taking into account buying all the ingredients. Soda and chips too.
She sells some coleslaw also. I'd buy two regular hot dogs, one sausage dog, a fanta orange soda and some coleslaw. Easy profit.
https://www.youtube.com/watch?v=YD76dLBIKT4
I see cake, but no hot dog. I can provide a hot dog for them buns.