vpn dual wan

Cisco's RV-345P is the latest addition to the company's small business VPN router family. Read on SmallNetBuilder

I was wondering if it might be possible to combine two routers to get higher VPN throughput. I'm upgrading my RT-N66U which can handle about 15MBps on VPN to a RT-AC66U B1 which should be able to handle 30+MBps. But I was wondering if there might be some way to keep both since these routers...