You can find walkable, safe neighborhoods all across the city, so it will likely come down to the location of your work, and the type of lifestyle you prefer (laid back, in the scene, family life, etc.). I live on the west side myself, so I'll speak to this area.
What is a Concave Wheel? Concave Technology takes the center of the wheel and dips inwards to give it that bowl effect. Rather than exaggerating a bigger lip for the back wheel, and a smaller lip for the front. Concave wheels emphasize the concavity of the rear wheel to differentiate from the front wheel.
There are two types of curved mirrors; concave and convex. A concave mirror, also known as a converging mirror, is a mirror in which the reflective surface bulges away from the light source. Concave mirror reflect light inwards towards a single point known as the focal point. The focal piont of a concave mirror is located in front of the mirror. As a result, this type of mirror can form real and virtual images depending on the distance of the object from the mirror. A convex mirror, also known as a diverging mirror, is a curved mirror in which the reflective surface bulges toward the light source. Convex mirrors reflect light outwards and therefore can not be used to focus light.