Sonora Taqueria & La Tarte Bakery are two different places, a taqueria and a Russian bakery, in Terra Linda (north San Rafael), in the same complex of businesses as Scotty's Market.
I had a late lunch today at Sonora Taqueria. First came chips (good, not special) with two excellent salsas made by the owner; really good. Then my tacos - Carne Asada and Al Pastor ($2.59 each) - arrived. They were large and excellent; the sauce on them was so good I didn't add any salsa. it's a taqueria in a small Mexican market. I'll be back.
A few doors away and set back is La Tarte Bakery, owned by a very pleasant Russian woman. I had three pastries (two shortbread-based and one almond) and they were wonderful. I took home a beef piroshki. She remembers House of Piroshki in SF on Irving, which she said deep fried their version in contrast to her baked-and-healthier version. Unhealthy wins :-( This is a high-quality Russian bakery that merits a trip off 101.
620 Manuel T Freitas Parkway (at Del Ganado Rd)
San Rafael, CA 94903