Are you there, Bessie? It's me, Clara

Here are pictures of Bessie passing Clara, and then her in what may be Bessie's rear view mirror, calling to someone. She's dressed in the style of the 70's. I hear there are a lot of outfits for Clara. In the Radio Times, Jenna-Louise says "In the beginning we see a Clara in the 60's, 70's and the 80's, so there are a lot of costume changes... we finally understand why The Doctor has met Clara so many times". Notice she says "A" Clara, instead of just saying we see Clara in the 60's, etc. Hmmmmm...