Sorry MICROS, but you're confusing the ABS feature found on the M8 with the traction control feature on the M11.
Also, NEVER use the ABS feature on an electric car - you will torch the comm. This is only designed to be used to pulse or actuate a servo and a mechanical brake (on a nitro car).
Traction control (M11 only), though, can be used to modify the throttle curve/response speed in both electric and nitro cars.
No, it is not 'true' ABS like in the full scale automotive world. But it does give you the option to modify the amount of 'rip'. Super helpful on explosive, brushless motors, or when track conditions change for the worse. It doesn't just at like a slow servo. There are a ton of ways to customize this feature...or not use it at all.
The battery for the M8 is not the same as the M11. Not certain where they're available at.
I've used a M8 for a few years and just got the M11 a little while ago. I loved my M8...the M11 is simply off the hook. Tons of features that are very easy to navigate.
Plus, you gotta love a radio that has a vibrating feature!