70 active on average at any given time per the article, which then lists total fleet size, as opposed to number of active cars on average, so it's not a fair comparison.
Although then it says they drive about 4m miles per week, which works out to 57,000 miles per active RA agent per week. A person driving ~25 mph on average 24/7 would do ~4000 miles in a week (and we can assume 24/7 here because they reported active agents, so we assume a team of ~3 people swapping out as driver in this hypothetical).
So that gives you a car/operator ratio of at least 14, and probably more since I bet the average speed is less than 25 mph.
Although then it says they drive about 4m miles per week, which works out to 57,000 miles per active RA agent per week. A person driving ~25 mph on average 24/7 would do ~4000 miles in a week (and we can assume 24/7 here because they reported active agents, so we assume a team of ~3 people swapping out as driver in this hypothetical).
So that gives you a car/operator ratio of at least 14, and probably more since I bet the average speed is less than 25 mph.