305 A.2d 868 Brown et al., Appellants, v. Commonwealth. Supreme Court of Pennsylvania.Argued November 13, 1972 Decided May 23, 1973 Torts — Sovereign immunity — Article I, § 11 of Pennsylvania Constitution — Sovereign immunity constitutionally, not judicially, mandated — Waiver of immunity for determination by legislature — Administrative Code — Purchase of liability insurance. […]