Possibly all done in dollars. Remember Toyota , or their agents, will have pools of money and will be trading forwards and hedging etc.
It is not one individual sale that they are concerned with, it will be 100's or maybe 1000's
Trade goes on around the world all the time, with all different currencies.
Example, I bought a car from ToyoTa Cars Doha and I am from let's say Qatar, how can toyota cars doha pay the import from japan? In qatary rials? Dollars? does toyota cars doha pay directly to japan? if the cars are straight from japan, or us or india. how?