David Wheatley says he trains using old tyres and gas canisters.
Two other alpacas are treated by vets for facial injuries as two dogs are seized, police say.
"Our investigation into this absolutely tragic collision continues," Cambridgeshire Police says.
The body of a 16-year-old girl was found and searches continue for a missing male, police say.
Cambridgeshire Police says "no further people" were located within a blue Volkswagen Polo on Sunday.
The families of the missing teen, and of a girl whose body has been found, are devastated.
Searches continue for a missing male teenager who remains unaccounted for.
Flower farmer David Wheatley now mills unused grain and sells artisan flour via mail order.
David Wheatley says pricing structures for selling the crop feel like "gambling".
