this. christine and dave? >> contentious. thanks. colorado senator cory gardner inviting jeff sessions to discuss marijuana. gardener said he would block all of the president trump's judicial nominees until sessions' marijuana decision is reversed. session's move likely to pit federal and local officials against. gardener says no meeting with sessions has been scheduled yet. it's a whalcohol lot -- >> if you're hungry your pizza hut delivery could roll up in a self-driving van. >> perfect. >> at 4:47 a.m. how soon could these vehicles hit the road?