Are there any rides that accomadate electric wheelchairs

in a handful of cities this is available as a ride classification, but few.  Generally speaking you could request an Uber XL and then contact the driver to see if they can handle you, but honestly you're probably better with a Taxi designed for such service etc...

In NYC, many Yellow Cans have been converted to Nissan NV200, which accommodates electric wheelchairs. I think  

https://www.nissanusa.com/vehicles/commercial/nyc-taxi.html

Where are you located? Many times there are local companies who have this capability.

In some cities (as of today, Chicago, DC, NYC, and Philadelphia), Uber has a service called Uber WAV which accommodates wheelchairs. 

https://www.uber.com/ride/uberwav/

If you are not in one of those cities, I think your best bet would be to call a taxi company and see if they can accommodate you.