ASUS ZenWiFi BD4 Outdoor: Any good?

Howdy there! Ever since I bought into the ASUS ZenWifi ecosystem I've had the issue with poor connectivity in my garden and driveway (where I needed WiFi coverage for my damn car to update its firmware).

Today I came across the ASUS ZenWiFi BD4 Outdoor which seems like it would be a good solution to getting some coverage outside especially if it supports wireless backhaul (my house is on a hill with the driveway being on street level so running ethernet cables isn't the easiest).

Has anyone used this thing before? Any insights you could offer?