I think 1600 watts of solar panels produces enough energy to drive an EV 12000 miles a year. Your car though would have to be always plugged in during the day. But probably 3200 watts would be enough for a car used for commuting to be charged mornings, evenings, and weekends.
> Your car though would have to be always plugged in during the day
Or just have a second stationary battery to store up the energy while you're away during the day.