Our unending search for hardwearing, zero-wood camping trailers has brought us to American builder LIV, a young company that skips common materials like fiberglass in favor of a welded thermoplastic construction. Its "Lightweight Innovative Vehicles," then, have none of the vulnerabilities associated with wood or hardware-fastened panels, delivering leakproof, rot-free performance. The company announced its latest innovation this month, adding a completely all-electric off-grid travel trailer to its stable.