as elon musk focuses on recently purchased twitter, tesla stock is tumbling. it s actually down 50% for the year. driving the electric vehicle maker s troubles, a road full of new competition. here s cbs kris van cleave. i go home, i plug it in. that s it. reporter: chris ashley is so happy with his electric ford f150 he s looking for an ev to replace his other car. why do you want to go with two electrics? i think i m really just tired of buying gas to be honest with you. reporter: but he s not seriously considering the market leader, tesla. seeing the other options come on the market as well definitely made a difference and makes it easier to not feel like you re pigeonholed into a certain decision. reporter: ashon ile tesla make aor 65% of the u.s. ev market now,