. >> reporter: along line of champ joins have come from this auction from back to manawar, considered the greatest racehorse in u.s. history. buyers examine pedigree and athleticism, choosing a horse they hope can bring not just wins but also return on their investment. >> i'm really careful about my investment but patient and that will pay off on the long term. >> reporter: big money, bigger dreams. >> if you love the beauty of the horse and you love the sport. when they cross the line in front, there is nothing better. >> as the ultimate discretionary, the horse business and economy are closely tied together. >> the stock market leads the horse business by six to 12 months and when it went down in '08, the horse business fell in '09. right now it's coming back to, almost back to '07 levels. >> reporter: the business is riped with other risks. many horses don't perform according to expectations despite the top genes and top trainers and fall victim to injury. >> it's really a great way to make a million dollars if you start with ten, but now we're making money and i like it better. >

. >> they are a small jelly fish related to portuguese manawar. >> experts say these small jelly fishto humans. the same washed ashore in san francisco. they were also spotted in monterey and santa cruz. the reason they're showing up lakely has to do with unusual wind patterns. the jelly fish are called by the wind sailors because they float on the surface of the water and carried by the wind. >> and new at 5:00, a new use for broken down cars to help train first responders. it's all part of a partnership we want to tell you about between the alameda county fire department and a local tow lot to help improve fire fighting training and save money. how junk cars are being put to good use to save lives. >> take her out that front seat. >> she is breathing. >> reporter: at a hayward tow lot. >> it's easy to supply them with cars. >> reporter: firefighter recruits are making mistakes now to save minutes and lives later. howard coreis of coreis auto wrecker incorporated supplies the cars while firefighter paramedic carl shares his unexpected talent. >> i've been teaching ems for 20 years. i