Up to 10,000. You should be aware that nowadays most businesses won't accept dollars, so you should bring Mexican pesos or a credit/debit card (Visa, MasterCard) instead.
Depends on origin and destination.
It takes about 5 days of driving. The distance is about 2,700 miles, and if you drive about 500 miles a day, it will take you about five days.
Visit Baja California in Mexico
Visit Mexican Cattle Ranches in Baja California
Visiting Border City Tijuana in Baja California, Mexico
Whale Watching in Baja California, Mexico