All the major players are currently selling various stages of electric, seems like the know how is there and its just a case of fitting it into the current bodyshell.
In the first half of the 20th Century ALCo and Baldwin were the 2 biggest locomotive builders in the US turning out 15 locos a day in the peak of demand. In the second half of the 20thC they disappeared, unable to make the change from steam to diesel fast enough to compete with upstarts like Electro Motive and General Electric.
I believe the same thing is going to happen with the change to electric cars. Household name car firms are going to be history. Who carries a Nokia these days?