Rule 59 motion for a new trial; Rule 50 motion for judgment notwithstanding the verdict; Rule 42 motion to bifurcate; N.C. Gen. Stat. § 1A-1, Rule 42, N.C. Gen. Stat. § 1A-1, Rule 50, N.C. Gen. Stat. § 1A-1, Rule 59; stream of commerce; negligence; product liability; implied warranty of merchantability; implied warranty of fitness for a particular purpose; sealed-container defense; N.C. Gen. Stat. § 99B-2(a); directed verdict; JNOV