nascar officials seizing tires from the sport's biggest star s on sunday.flating their tires on purpose. possibly using a technique called "bleeding" poking minuscule holes in them to slowly release air improving tire durability and helping drivers get the ideal grip on the track. jeff gordon speaking out in favor of the inspection. >> interesting to me that nascar is investigating this further. it is definitely being done. it's not clear how it is being done. >> reporter: nascar telling abc news that tire inspections are frequent and not unusual. something officials recently discussed on nascar radio. >> we have got regular-scheduled audi at this times we do throughout the year. we have done it in the past as well. this is the third time in past two weeks nascar has taken away top drivers tires for inspection, joe viola gan know and harvin to two weeks ago. their tires coming back clean anding amore crew oefrs the last eight days including curt busch and logano again. >> in the past we don't hear about them inspecting tires much. with a lot of rumors in th

nascar closed above 5,000. it has only done that one time before and it was in the year 2000. the dow and sm & p500 did set new record highs. the dow added 155 points. the s & p added 12. investors seem confident the market is still growing at a slow pace. >>> twitter in san francisco are now the target of online threat allegedly posted by supporters of isis. jana katsuyama is live with the role of social media. >> reporter: now isis supporters are retaliating by threatening to take their door to twitter's front door. at twitter headquarters in san francisco, everything appeared quiet. some employees told us off camera they had not received any company notices about heightened security. an online message surfaced sunday including death threats and a photo of jack dorsey. they targeted dorsey and twitter employees and business. isis has been taking their war online. a twitter spokesman responded to ktvu saying our security team is investigating the varasitiy of these threats. >> i didn't surprise me because in the past there's been threats. >> reporter: people who work in the same building as twitter, workers say they've already noticed more security. >> r

nascar xfinity series. >>> let's get an early start on your money. how do you follow up the worst day of the year? maybe with a little bounce. look at that. you've got dow futures higher. the s year. a very strong dollar will hurt corporate profits next year and that in turn hurting the stock market. the euro has tumbled to a 12-year low against the dollar losing more ground this morning. so a lot of action in the currency markets. >>> president obama wants to make it easier for college grads to pay back their loans. he ordered the education department to develop a new system that allows students to file a complaint when there's a problem. last year students with loans graduated with $33,000 in debt on average. $33,000. now, i talked yesterday to the student debt guru about students and how they can keep debt down from the beginning. this is what he told me. >> if you're expected to have at graduations going to exceed your annual starting salary maybe you need to borrow lessor go to a less expensive school. >> that means liberal arts majors shouldn't borrow as much as engineering majors. you have to borrow as much money as you expect to earn in your first year after school.