There is apparently a phenomenon in the US now, where parents drive to the school individually to pick up and drop off their children at the beginning and end of the day. Some people I work with even take time off from working to do this. When the parents descend on the school each day there’s insane traffic, cars lined up for miles, all idling their engines. What happened to school buses?
I honestly doubt that you can pay for the car needed and your own time required to take your kids to school for those $630 even if you only value your time at something like $2/hour.
Not sure how it works in the US but here in Europe there would probably be programs to pay for it if you can prove you don’t have the income to pay it yourself.