Jeb was defining segments using DEMOGRAPHIC considerations.
There are 4 types of segmentation.
1) Geographic
2) Demographic
3) Psychographic
4) Behavioral
Demographic segmentation considers who the customers are. Data that are required to be collected to know who the customers are 1) age, 2) gender, 3) income, 4) social class, 5) religion, and 6) race or family life cycle.
People who want high quality car are usually big income earners. People who wants low-priced cars are usually small income earners or even students who just got their drivers license.