What Chy said (and bear in mind he has a wicked big ass pole barn to mess around in ffs!!).
220v?
Is that to remind you of the old country or is it so you can finally use that old Black & Decker drill you took out with you all those years ago?

We get
Garage Rehab on telly over here and they always use an epoxy thing from
Surface 2 Surface.
It seals the concrete and it's oil resistant and easy to clean up, apparently.
Lord only knows how much it would cost for that size garage.
I imagine there should be a lot of labour saving though as it's not a refurb of a grubby old floor, a new floor should be ready go.
I bet they could even do it in Man City colours, if you absolutely HAD to, like.
.