Gas prices in the US are in $/gal, so $6.19 per gallon. Some signs just don’t include the decimal.
I understand your confusion… I went to Canada for the first time recently and their prices are cents per liter, but (much like American prices) that’s not actually indicated anywhere.
Yes! With a few plugins, of course. YouCompleteMe and fzf.vim are my favorites by far. I spend a lot of time on embedded Linux devices at work, so it’s pretty convenient to use the same editor on my laptop and on the target device.