Is the monorail crafting now endless?

"drmartinus77;c-1761032" wrote:

"stinkbugger;c-1760705" wrote:
And getting 5 donuts again is "ok", but I think I'd rather just have those characters earning cash elsewhere so I can later convert it into donuts.

How can you convert game currency into donuts? I only know of Krustyland tickets being convertable to game currency, but no way to convert the currency into donuts.

KEM farming, blood mobiles, etc. basically using cash to buy items en masse that produce XP (have XP collider on); xp allows you to level up; level up = donuts.