"Removable helmet"? I should hope so. DAREDEVIL STUNT DRIVER FOUND DEAD FROM SUFFOCATION AND STARVATION

I didn't remember the cane, but some elemental googling brought up this:

Knievel was an alcoholic. At the height of his alcoholism, he drank half a fifth of whiskey and beer chasers every day.

Knievel owned a diamond-encrusted walking cane that he filled with Wild Turkey.

The optional "scramble van" came with splints and morphine, and is much sought-after among toy collectors.