Need help with inverter

I am wondering if it is possible too hook up an oxygen concentrator in my car for longer than normal trips. My gf needs 10 to 15 liters but can maybe get away with 10 (1 machine) for a drive. The machine is 120volts almost 600 watts ( i believe it says 4.5A) and I usually run two machines in the house but for a drive for about 4 hours i can get away with 1 machine but don’t have enough portable oxygen. Do you think i can add an inverter and batteries in my trunk to run the machine? if so i would need advice on installing it.
Thanks