Trivia

The $200 Karel needs to legally immigrate equals almost $3,500 in 2015 dollars.

The Yellow cab Karel is driving has posted rates of 15 cents and 5 cents per 1/4 mile, which equals $2.60 and $0.85 in 2015. Todays posted regular cab rates for NYC are $2.50 and $0.50 per 1/5 mile. Not too different 80 years later.