I used to drive the 40-odd mile stretch of US 93 between Wickenburg and the AZ 97 junction fairly often, and about every 10 or 12 trips I’d have to take the shoulder to avoid an idiot trying to pass where he shouldn’t have. The worst times were Sunday evenings, when you had pissed-off people heading back to Phoenix from Las Vegas after losing their money.
BTW, the road you were on was US 95, not AZ 95.
Thanks for the correction.