Here in Estonia we had long and very agressive advertisement campaign. I think that every OTA TV channel was included. It was possible to see an ad maybe 20 times per day and this campaign lasted for several months and then repeated again after short silence.
Similar massive campaign was in radio too. It was really annoying.
I do not have cable networks, so can not tell what happened there.
The result of this massive ad campaign was, that only 3 private persons bought an iMiev as personal car. Up to 40 iMievs were bought for companies (for taxi and car rental companies, etc, some of them state owned companies). And the rest of Estonian iMievs (507 cars) belong to the state.