At first glance, I totally agree with you both, although I think we have to wait til we see the official images. I also think the car looks quite bulky. I like the idea behind, but I feel it doesn't work.
About the building, I love the art deco section of it, the ground floor looks great, but yeah, upper floors doesn't look too exciting, and the roof decoration doesn't match the deco vibe of the curved main section. It's a weird combination of architecture styles. Also think the 'D' on the Dinner sign looks too big.
I'm not a fan of oversized versions of the modulars by combining two or more sets, I like them the way they are, but I feel this may be the first time I will consider to buy two and mirror the building, as I feel the "jukebox section" will make more sense if placed in the middle of a symetric building.