When I moved to Canada in 1996, the first lawnmower I bought was electric (not battery, just a long cord) and I am still using that one today. So, there has been electric solution for that for a looong time and I do not see that application really needs a Tesla solution, there are plenty of electric options available.
I'm close by in Buffalo, New York....
I've been doing everything electrically for a while now - besides 3 plugin cars, I also have only solely electric tools. As far as lawnmowers I have had for 6 years a horribly underpowered (plus this thing is only good for the smallest yard anyway) TORO - E-Cycler (the popular gasoline version is the Re-Cycler). A mulching mower needs at least 3 and preferably 6 hp - the E- cycler has 1/3 hp with a fresh battery, and for most of the time can only develop 1/4 hp (for metric people that is a massive 186 watts). Using the thing was a chore and a half - having to go constantly over the same cut lawn over and over again.
I finally gave the thing away to an 'ecologically interested' friend, and bought an expensive SNAPPER lawn mower which is considered semi-residential-commercial, with its heavy, and thick steel decking. This unit has 2 - 82 volt - 2 ampere-hour and 1 - 4 ampere hour battery I bought in addition for $320 extra.
I need the 3 fully charged batteries (8 ah-worth), since the thing eats batteries, but at an estimated 1 hp output the thing may stall, but at least it works like a regular mulching mower and does a great job with one or two passes. Charging is via a wall mounted fast charger - whose fan forced cooling pulls air through the battery to be charged, a nice touch. 3 amps drawn at 110 volts, so those times when you need more than the 3 batteries you will have a recharged one by the time you need it.
Now Snowblowers are another thing: I have a corded SNO-JOE 14 amp 21" model - the largest 'toy' snowblower you can buy, and it works well (along with its similarly constructed lawn tiller made up of almost all the same parts), but it runs out of power easily - especially if you have to use more than one 100 foot #12 gauge extension cord.
I bought a friend's old CASE 724 two-stage (first stage has a dual augur since the mouth is so huge (24" wide x 23" high) that had a blown 7 HP gas engine on it. I took the engine-less snowblower and chancing that I was way underpowering the thing, I bought a dirt cheap ($140) 3 HP Harbor 'Junk' tools Smith & Jones (typical chinese names) motor - which incidentally , is a perfectly fine 3500 rpm induction motor that meets any efficiency requirements at less than 13 amperes @ 230 volts full load. Of course, I load it up to around 7 hp (the breakdown torque limit of the motor) - draws 35 amperes @ 210 volts (after 150 feet of extension cord) plugged into my Tesla Nema 14-50 at the front of the garage.
At a heavy WET snowstorm the march before last, the snow was so heavy that all the gas engine snowblowers costing more than $1000 were conking out on my street, but my home made electric was just shooting snow like crazy going down the side walk... So far from being underpowered, the thing was better than anything gasoline commercially sold. The extremely cold weather prevented the overload protector from nuisance tripping, but I could tell it was WORKING since the motor in the past has normally been stone cold, but here it was luke warm so I KNEW it was paying for itself. I chose sprocket sizes to simulate a 3,000 rpm gas engine, in other words, the thing ran like a 7 hp snow thrower running just short of flat out (3000 vs 3600 rpm).