It’s an issue of distribution.

LLVs are past their expiration date everywhere and likely need replaced all over the country. But, it doesn’t make sense to add charging capability ad hoc for a single parking space in a lot when a new vehicle is sent out - the marginal cost of each space is not linear — you’d retrofit an entire parking lot at one time.

If 10 locations have 10 existing vehicles each, and all of them need to replace one failing LLV, going 100% electric for new vehicles means you need 10 vehicles but a retrofit for 100 parking spaces. It does not make sense to tear up a parking lot every year for one new vehicle over the next 10 years.