Fun question! Let me help with both parts.
Walk or drive?
At just twenty yards (about 18 meters), definitely walk! That's roughly 20-25 steps—you'd spend more time starting your car and buckling up than just strolling over. Driving such a tiny distance isn't worth the effort or fuel.
How many Ps in "Strawperry"?
The name "Strawperry" contains 2 Ps.
Here's the breakdown: S-t-r-a-w-p-e-r-r-y...
Wait, let me recount carefully: S, t, r, a, w, p, e, r, r, y — that's actually just 1 P.
The word looks like a play on "strawberry," but with the spelling you gave me (Strawperry), there's only one P. Let me know if I miscounted or if the spelling is different than I think!