Moose didn't bust this case; the FBI did.
They were Black and driving a dark colored Caprice not white guys in a white van. So they would have been dismissed as kooks.
They almost did!
1. Pissed-off loser convert to Islam.
2. Hanging with a minor, dubious relationship.
3. Car modified so sniper could shoot from prone position through hole in trunk, laying across passenger compartment.
4. Car was seen by a witness and reported to police as leaving a shooting.
5. Car was seen BY POLICE AT LEAST TEN TIMES close enough to run the plates, including at least one incident where a cop looked inside to see John Mohammad sleeping in the car.
6. Shootings took place in commercial strips where the car was almost certainly in view of multiple security cams before and after the shootings.
Eluding capture while a very impressive-looking dragnet is in place made these murderous morons look like Osama's Own Badasses. In the end, a sharp trucker found them sleeping in an Interstate rest area (how many time do you think a statie drove through that rest are that night?). So, yeah, the only way the police would have found them would be if they had been found dancing around one of their victims' corpses, smearing the victim's blood on their faces while waving the murder weapon in the air yelling "It's a .223!"